pass through all sinatra ivars
Merge pull request #25 from ajsharp/ivars-in-templates

Ivars in templates
remove version restrictions on sinatra, tilt and actionpack dev deps
update rbx travis dependencies
udpate history with 0.6.1 changes
update years in readme and license
add @lafave to contributors list
only use debugger gem on mri 19
bump 0.6.1
Merge remote-tracking branch 'upstream/master' into nested-ivars-fix
rearrange PROTECTED_IVARS